error message E18 comes whenever i open my powershot A400 canon camera. after making few on and off it will work for sometime. can it be fixed easily? it it expensive to repair?please help me.

manoharerror message E18 comes whenever i open my powershot A400 canon camera. after making few on and off it will work for sometime. can it be fixed easily? it it expensive to repair?please help me.
manohar

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Here is a site that discusses things you can try to fix this for free. They do a much better job than I could, and they let you know the risks and steps to take, in order. Try this first, you might get lucky- they say 50% of stuck lenses or lens errors can be fixed.http://camerarepair.blogspot.com/2007/12/fixing-lens-error-on-digital-camera.html
Don't worry, this is a huge problem with extendable lenses, due to their construction with small, plastic gears that are easy to break with a bump or fall, or obstruction while extending.

If the lens does not extend/retract when the camera is powered on, then lens assembly is damaged.

Unfortunately, such Canon SX100 (and the SX110 too) has a very fragile lens assembly, and it's damaged very easily. Most of the times the internal gears, the plastic post guides and the motor are damaged at the same time, so the only solutio is to replace the whole lens assembly.

I have a 3 year old Canon PowerShot SX100 IS. While testing an external battery power supply I built, the external power connector pulled out while the lens barrel was extending just after I turned on the camera. Power to the camera was lost before the lens barrel fully extended and wouldn't reset when I repowered the camera. The dreaded error message "Lens error, restart camera" appeared and the camera shut down. I restarted the camera over and over and over again but the lens wouldn't reset. I was extremely lucky to find the information here and read various fixes. I didn't want to take the camera apart so I tried various fixes others have successfully used. I first tried smacking the bottom of the camera hard with the palm of my hand just after pushing the on/off button but that didn't work. The one which worked was smacking the camera on the side immediately after I pushed the on/off button. I smacked it quite hard twice with the palm of my hand then, suddenly, the lens barrel began to move and the lens reset itself back to its starting position. Thanks to everyone who has posted here!

The E18 error is an error message on Canondigital cameras. The E18 error occurs when anything prevents the zoom lens from properly extending or retracting.[1]
The error has become notorious in the Canon user community as it can
completely disable the camera, requiring expensive repairs.
A quick internet search for "E18" + "canon" quickly reveals hundreds of similar complaints.
ConsumerAffairs.com reports that the "lens has a feature called
bellows claw, which is a gear that physically extends and retracts the
lens. A piece that holds the lens, the barrier plate, is not large
enough and can sometimes cause the bellows claw to malfunction,
resulting in a stuck lens". The result is a black screen that only
contains the error message, E18. Another problem mentioned on the site
blames a sticky iris in the lens, caused by grease entering inside from
the microphones built into the lens. The buildup freezes up the ability
of the lens to open.

If the lens does not extend/retract when the camera is powered on, then lens assembly is damaged.

Unfortunately, such Canon SX100 (and the SX110 too) has a very fragile lens assembly, and it's damaged very easily. Most of the times the internal gears, the plastic post guides and the motor are damaged at the same time, so the only solution is to replace the whole lens assembly.

Unfortunately this Canon SX100 (and the SX110 too) has a very fragile lens assembly. Once you have this lens error problem, there are only four solutions: 1) If it's under warranty, contact Canon to make it valid; 2) If not, then have a repair center to replace the lens assembly (either the internal lens motor or the gears are damaged) or, 3) Sell it for parts or 4) send it to the trash can.

It's important that you fix the E18 error first, as the blur of colors may be symproms of a failing CCD. If so, Canon would fix this for you for free IF the camera has no other problems (ie no E18 lens error). Please see the following info:

This is probably THE most common failure among digital cameras. There's a halfway chance of fixing it yourself, described here: http://camerarepair.blogspot.com/2007/12/fixing-lens-error-on-digital-camera.html